Dust-separator.



W. PITTELKUW.

DUST SEPARATOR.

APPLIOATION FILED DBO. 4, 1909.

980,832. Patented Jan.' 3,1911

2 SHEETS-SHEET 1.

W. PITTELKOW.

DUST SEPARATOR.

APPLICATION FILED DBO. 4, 1909.v

980,832, Patented JaILS, 1911.

2 SHEETS-SHEET 2 i 'UNITED sfr-Ars 'Arum Futon.

WILLIAI PITTELKOW, OI CHICAGO, ILLINOIS, ASSIGNOR, BY MESN ASSIGNMENTS,`TO ELECTRIC CLEAN/ER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS.

Specicaton of Letters Patent.v

DUSTfSEPARATOR.

Patented Jan'. 3, 1911.

Application led December 4,' 1909. Serial'No. 531,370.

-To all whom it may concern:

Be it known that I, VILLIAM PITTELKOW, a citizen of the Unitedl Statesof America, and a resident of Chicago,'county of Cook, State ofIllinois, have invented certain new and useful Improvements inDust-Separators, of Vwhich the following is a specification.

The main objects of this invention are to provide an im )roved form ofdust 'separator particularly aldapted for removing d1rt and dust fromthe air in pneumatic cleaners, and

of such construction that the filtering mdium may be of a form so simpleand ineX- pensive that it may' be thrown away and re laced by anotherwhen it becomes clogged with dirt; and to provide an improved suctioncleaner which is so constructed thatthe labor required to keep it cleanand in working4 order is reduced'to a-minimum.

A specific construction embodying this invention is illustrated in theaccompanying drawings, in which: 'i l. n Figure 1 is a section'taltenfon the line-l 1 1 of Fig. 3. Fig. 2 is a section taken 011 line2 2 of Fig. 3. Fig. 3 is a section taken on line 3 3 of Fig. 2. Fig. Y4is'a section taken on line 4 4 of Fig. 2. Fig. 5 isa. fragmentarysection taken on line 5 5 of F ig. 2, the filtering material' beingfalsoshown in section. Fig. 6 is a fragmentary section of.the'door and lockfor. the cleaner casing.

In the construction shown, the casing 1, which contains themotor andpump (not shown), is preferably ,mounted upon casters to enable thedevice to'be easily moved about, and is open at its top. The casing 1 isprovidedwith U-shaped handles 2, which are -pivoted to brackets 3 nearthe top of each end of the casing.

Seated on the top of the casing 1, and serving to close the same, isthecleaner casing 4, which, as shown in Fig. 1, is removably hinged on thecasing 1 by. meansvof straps or arms 5 which. are securedy to the bottomof the casing 4 and provided with downwardly offset ends`adapted toengage beneath a ledge 6 on both sides of a strengthening block 6A whichis secured to the end of the casing 1. The block 6A is provided withsockets adapted to receive 'dowel pins 7 carried onf the bottom edge o fthe removable end wall or door 81 of the casing the end 20 of said osetyportion 4. On the end of the casing 4, opposite from said hingedconnection, is a handle 9 similar to the handle 2 and adapted to havethe adjacent handle `2 passed therethrough and turned downwardly tosecure the casing 4 tightly upon the casing 1.

The casing 4 is provided with la central, longitudinal partition 10which divides the casing into a receiving chamber 1l and a filteringchamber 12. A nipple 13 in the door 8 opens int-othe receiving chamberand is adapted to have the end -of the suction pipe (not shown)connected therewith.

The partition l10 is (provided, at its end adjacentto the end 14 of thecasing 4 with a4 screen 15 through which the air passes from the chamber11 t0 the chamber 12.

\This screen is cut away at the upper rear corner, as shown'in F1g. 1,to provide an air.

'K ing 4, and extending from the partition 10 to the side wall -ot' thecasing and downwardlyl for approximately one half yof the depth of thechamber 11, isa baffle lWall 17 which causes the dust-laden air currenttof flow downwardly when it enters, the chamber 11, and then upwardlytopasfsthrough the screen 15. Theturning-of said current of air causesthe heavier particles of-dirt to be thrown out of the current .anddepositedin ,the bottom of the chamben Thebottom 18 of the casing 4 isprovided Vwith an upwardly, offset portion 1 9 extend- 'ing from nearthe center of the casing to the end 14. The" chamber 12 is provided Iparit a transverse partition or 'baliie wall 21 which extends downwardlyfrom the top of the casing to a point above the offset portion 19.

Rigidly secured to the under side of said offset portion 19 is a sheetmetal structure( forming a channel or passage 22 which is provided inits bottom, near one end, with an outlet opening 23. Surroundlng-saldopening is a collaror nipple 24 which has aV ange 25 on its lower end. nelbow 26 forms a continuation of said passage, and has one arm 27secured to the baffle wall21, which has an opening registering with theend of thev elbow. The other end 28 of the elbow extends downwardlythrough the offset portion 19 and opens into the channel 22 near the end20 of said odset portion. ine elbow 26 is provided with a brace 29 whichis in axial alineinent with the arm 2?, and carried in said brace is aguide rod 30 which is provided at one end with a head 31 adapted to abutagainst the outer end of the brace 29, and the other end of said rodprojects from` the end of the elbow and entends into close proximity tothe end wall 8. Supiported on said guide rod 30 is the lter 32, which isprovided with a central tubular screen 33 having a tapered nozzle oroutlet 34 on its inner end adapted to tightly in the/end of the arm 27of the elbow. A guide collar 35 is rigidly secured. in the nozzle and inarial alinement therewith, and is adapted to travel on the guide rod 30and guide said nozzle into the elbow.

The rear end of the nozzle is provided with a peripheral shoulder 36,between which and the baille wall 2l is secured a gasket 3T( adapted toform a tight joint between the screen and the elbow. ln the opposite endof the screen is a bell-shaped guided having its smaller end directedtoward the outer end of the screen and provided with a lat eral flangeor plate 39 which closes the end of the screen with the except-ion of asmall aperture for the rod. Said plate is eX- tended outwardly beyondthe end of the screen to provide a shoulder 40.

@n the outer end of the rod 30 is awasher 41 which abuts against theplate, and a wingnut 42 is adapted to be secured on the end `of the rodand set up against said washer vto force the screen tightly into the endof the elbow.

The filtering; screen comprises a perfo-V rated metal cylinder and acovering of altenY nate layers of cheese cloth or other porous v fabric43 and cotton batting 44, or other woolly material. The inner end of thefabric extends beyond the batting and is rst wound onto the screen toprevent the loose fibers of cotton from being drawn .through the meshesof the screen. 'lhe layer of cotton batting is preferably basted inposition on one face of the fabric, and the two layers are togetherwound around the screen until as many vthiclrnessesas desired have beenplaced. The outer end of the fabric also extends beyond thek batting sothat the fabric will cover the outer surface l of the batting. flhisinaybe secured in place rby means of strings or` tapes45'tied around theoutside. y

The inletpipe 46 of the pump extends upwardly through the collar 24 andinto the channel 22, and at a point below said collar itis provided witha flange 47.

lnterposed between the collar 24 and said .flange is a rubber gasket orwasher 48 adapted to be compressed by the weight of the casing 4 whenthe casing is brought down onto the casing 1,

The removable end or door 8 of the casing 4 is adapted to be secured inclosed position bythe spring-pressed bolt 49 lwhich is carried. inthe'top edge of the door and is provided with a beveled upper end 50adapted to enter a socket 51 in the top 52 of the casing.

ilhefoperation of the device shown is as follows slll/"hen the pump isoperated, a cnrrent of air is drawn through-the usual suc f tion nozzleand flexible tube (not shown), and enters the chamber l1 at the inlet18. The air current is deflected downwardly around the baffle wall 17,and as it turns up wardly around said wall, the heavier'particles ofdirt are thrown downwardly to the bottom of the chamber. 'lhefcurrentthen passes into the chamber 12 through the screen 15 which separatesout any of the coarser dirt which has been carried beyond the baillewall 1'?. After entering the chamber 12 the current passes beneath thebaffle wall 21 and enters the filter 52. ln passing through the layersof batting and fabric, the liner particles of dirt are filtered out fromthe air while the current 'passes into the space within the screen andthence through the elbow 26 and the channel 22 to the pump. l/Vhen thewalls of the filter become so clogged with dirt as to retard the passageof air therethrough, the door 8 is opened and the nut 42 is removed fromthe rod 30. 'llhe filter may then be withdrawn from the rod, and thelayers of fabric and batting removed. The filtering material in the formshown is so inexpensive that, instead of cleaning it when filled withdirt, it may be thrownaway and replaced by new material at a cost of afew cents. l/llhen the filter is replaced in the casing, the guidecollar 35 running on the rod 30 centers the nozzle 34 in the elbow, andthe guide 3g brings the outer end of the screen into position, thusinsuring proper registering ofl the parts. rlhe filter is finallysecured in place by the nut 42, and after the closing of the door 8 `thedevice is again ready for operation. The dirt which is separated fromthe current' before it reaches the filter may be removed from the casingthrough the door 8.

The method of mounting the upper casing to the lower casing affords easyaccess to the lower casing to inspect or care for the pump and motor.

Although but one specific embodiment of this` invention is hereinshownand described, it will be understood that Vsome of the details ofthe construction shown may be altered or omitted, within the scope ofthe following claims, without departing from `the spirit of thisinvention.

I.claim:-

1. A pneumatic cleaner, comprising a cas ing havmg an inlet and anoutlet therein, a pipe Iin the casing connected with said outlet, aguide rod projecting from the inner A pneumatic cleaner, comprising acasing, means providing a passage in the casing, a guide rod supportedin said means, a screen supported on the rod and connected with saidpassage, and alternately arranged layers of fabric and woolly materialwound on the screen.

3. A pneumatic cleaner, comprising a casing, means in the casingproviding aneXit passage, a guide iod projecting from the inner end ofthe passage, a screen mounted on the rod, a nozzle on the screenaffording a tight joint with the inner end of thepassage, means in thescreen adapted to center it on the rod, and a plurality` of layers offiltering material wound on the scieen.

4. A pneumatic cleaner, comprising a casing, a veitical partitiondividing the casing into two compartments, one having an inlet and theother an out-let, a screened opening near an upper corner of thepartition, a baiiie wall in said one compartment spaced away from saidinlet, under which the lcurrent of `air must pass on its way to saidopening, a

filter in the other compartment, and means providing a passageconnecting the llter with the outlet. y l

5. A pneumatic cleaner, comprising a casing, a vertical partitiondividing the casing into two compartments,a screened opening in thepartition near an upper corner of said partition, aording communicationbetween the compartments, means providing an inlet into one compartmentat the end thereof most distant from said screened opening, 'a battlewall extending downward from the upper wall of said one compartment, afilter in the other. compartment ,and connected with the outlet, andmeans supporting the filter out of Contact with the wallsof thecompartment.

G. A pneumatic cleaner, comprising a casing, a partition dividing thecasing into compartments, an inlet insone compartment, a battle walldepending from the top of the compartment to a point below the inlet, a

screen in the partition on the side of the battle wall opposite from theinlet,-an elbow l outlet, a guide rodjsup'- ported on the elbow, and alter mounted on connected with the said guide iod.

7. A pneumatic cleaner, comprising a casing having an upwardly offsetportion in its bottom, a partitionvdividing the casing intocompartments, a screen in the paigtition, means providing a channelbeneath the offset portion and opening into one of the compartments, anelbow in the compartment and connected with Said channel, a filterscreen connected with the elbow, ltering means partments, a battle wall`in each compartment,a screen in the partition, a filter screensupportedy in one compartment, alternate layers of fabric and woollymaterial wound on the filter screen, means providing a passageI from thelter screen to the lower casing, a pump inlet pipe in the .lower casing,and means providing a tight joint between the pipe and passage. o

9. A pneumatic cleaner, comprising a casing having an air outlet, aguide rod secured in a vcentral position in said outletI and vextendinginward of the casing from said outlet, a perforated hollow screen havingat one end aguide part which is adapted to receive said rod and havingat its other end a funnel-shaped guide part adapted to ceiiter saidother end on said rod,'said oneend of said screen being adapted to havetight fit with said outlet, and means on said rod for. securing saidscreen in position.

10. A pneumatic cleaner, comprising a casing having an air outlet, aguide rod secured in a central position in said outlet and extending'inward ofthe casing from said outlet, a perforated .hollow screen havingat one end a guide part .which is adapted toY receive said rod 'andhaving at its othery end a funnel-,shaped guideV part adapted to centersaid other end on said rod, said oney end of said lscreen being adaptedto have tight tit with said outletfmeans on said rod for securing saidscreen in position, and'Aa sheet ofy dust filtering material extendingacross the perforations in zsai'dscreen;

1l. A pneumatic cleaner, comprising acasing having` an air outlet, aguide IQd Se-V cured in a central position in said outlet and iextendinginward ofthe casing from said outlet, a perforated/hollow screen havingat one end a guide part which is open at one side `and adapted toreceive said rodA and having at yits other end a funnel-shaped guidepart adapted to center said other end on said rod, said one end of saidscreen be-l let, means; Jon said rod for securing said screen inposition, and alternate layers of fabric and woolly material wrappedaround said screen to cover the perforations therein and filter the airpassing through them.

l2. In a pneumatic cleaner, thecombination of a casing, a door in oneside thereof, said casing having therein aii outletlocated within thecasing remote from the door, a

izo ing adapted to have tight lit with said outoaosa hollow filteringscreen having vone end Signed at Chicago this 30th day of Noaclapted forhaving fitting engagement With vembeif, 1909.

said outlet, a guide extending from said-out- WLLIM PTTELKW let towardsaid door, and means On said 5 screen coasting with said guide fordireot- Witnesses:

ing said screen into position for accurately E. A. RUMMLER,

A registering with said outlet. MARY M. DILLMAN.

